Jonny Brownlee: 'I always eat pizza the night before a race, because wherever you go in the world pizza is pretty much the same'. Photograph: AFP/Getty Images

Eat, work, watch the Olympics, sleep: that's pretty much been my routine has been for the past 10 days – along, I suspect, with 60 million others across Britain. But there's one crucial difference. On Tuesday morning, I will be competing in the London 2012's men's triathlon.

I really can't wait. Watching the glut of British medals has been amazing and uplifting – and training, first at altitude at San Moritz and then in Yorkshire, has gone brilliantly. Everything is in place. Now myself, my brother Alistair and Stuart Hayes, the third member of the British team, just have to show what we can do.

Al and I enter the race as favourites, but that doesn't faze us. He has won 12 of the 15 world series races he's entered since 2009, while I've finished in the top three in my last 13 races at elite level – winning six of them – so while people talk about pressure, it won't affect us. A race is a race whether it's in Madrid, San Diego or London. There is always pressure to do well. And controlling nerves, like winning, is a skill.

It might surprise some people, but we've not practised on the Hyde Park course since we've been in London. We've swum in a local leisure centre not the Serpentine, and zipping around it on the bike doesn't appeal either with all that traffic. But we've competed on the course twice before, so we know what to expect. The bike, for instance, has a little hill going from Hyde Park to Buckingham Palace, but it's only a 2% incline, and the real challenge comes from handling the corners. We also knew that the bend where several riders crashed in the women's race on Saturday was tricky.

You might also be surprised that we've not talked detailed tactics yet. We'll wait to see what the weather is like on Tuesday morning first. If the water in the Serpentine is below 20C it will be a wetsuit swim which changes things slightly, for instance, and if there are significant downpours we might alter our approach too. But we've won in blistering sun, heavy rain and even a hailstorm, so the British weather doesn't scare us!

But I'm happy to tell you what our general approach will be during the race. It can be summed up in four words: we will be aggressive. We will go off hard in the 1500m swim and try to be in the top five out of the water to set ourselves up on the bike. We will then try to engineer a breakaway on the 43km bike ride so that when it comes to the run there are only a handful of athletes with a chance of a medal.

You have to flexible, mind, because things often don't always as you expect. People look at us, and maybe they are scared of what we can do. They know we can run faster than most too, so it wouldn't be a surprise if someone tried a breakaway on the bike. Having Stuart in the team as a domestique will help us respond to any challenges or difficulties. Al picked up a puncture while winning the European championships last year, for instance, so you have to be able to think on your feet.

We haven't tried to change too much beforehand. People think that because it's the Olympics, you have to train super hard, but if you push too much you'll be absolutely shattered. Yes our training has been hard, but it's also been controlled and we've tapered over the past week to ensure we are spot on.

I always eat pizza the night before a race, because wherever you go in the world pizza is pretty much the same and the chances of your body reacting negatively to it are slim. Breakfast will be toast or cereal, and I'll finish it by 7am to allow my body to digest it before the 11am start.

And then it will be time to race in front of a crowd of thousands of people cheering us on in Hyde Park. I know most people don't follow the triathlon world series format, which sends us around the world from Sydney to San Diego, but the Olympic triathlon race is easy to understand: you swim 1500m, bike 43km, run 10km and in the end somebody wins.

It will be tough to beat Al, who usually gets the better of me when we race, but it's not impossible. I am going to give it my all.

Three keys to victory

1) Don't think of the race as anything special. Yes, it's the Olympics but it's a normal swim-bike-run.

2) Swim fast, get a good clean start, and then everything will fall into place.